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  <meta charset="UTF-8">
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  <title>交集选择器</title>
  <style>
    .beauty{
      color: blue;
    }
    .rich{
      color: gold;
    }
    p.beauty{
      color: green;
    }
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</head>
<body>
  <h2 class="beauty">明星张三</h2>
  <h2 class="rich">土豪王五</h2>
  <h2 class="rich">明星土豪</h2>
  <br>
  <p class="beauty">小狗旺财</p>
  <p class="beauty">小猪佩奇</p>
  <br>

</body>
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